Castrol Aero 35 Landing Gear Shock Strut Fluid, Yellow, 55 gal

Castrol Aero™ 35 is a high quality, MIL-PRF-6083F based ISO Grade 15 mineral hydraulic fluid, containing antiwear agents and corrosion inhibitors. It also contains a shear stable viscosity index improver, antioxidant and an approved EP additive system which reduces martensitic streaking of landing gear outer cylinders and galling of shock strut upper bearings. This formulation is specially designed to reduce the stick-slip properties of MIL-PRF-6083F fluids.

APPLICATIONS
Aero 35 is specially designed for use in landing gear shock struts. Additionally, Aero 35 is compatible with approved MIL PRF-5606H and MIL-PRF-6083F hydraulic fluids. It is not completely compatible with synthetic gas turbine lubricants nor with phosphate-ester hydraulic fluids. It is compatible with other petroleum-based and synthesized hydrocarbon lubricants, but contamination should be avoided in order to maintain the unique properties of Aero 35. This product is compatible with most seals, hoses, and paints, normally used in shock struts and dispensing equipment connected with this application. While certain grades of the above materials are fully compatible with Aero 35, it is advisable to confirm acceptability of use with either the material manufacturer or Castrol.

TECHNICAL INFORMATION
Aero 35 Yellow is formulated in accordance with Boeing Specification BMS 3-32B, Type I as an alternative to Boeing Service Letters 707-SL-12-2; 727-SL-12-2; 737-SL-12-2; 757-SL-27-15-B. These letters instruct the addition of an EP additive to either the standard or corrosion inhibited mineral based hydraulic fluid for use in their landing gear shock struts.

TYPICAL CHARACTERISTICS
• API Gravity @ 16°C / 60°F (ASTM D287): 31.2 °API
• Density of finished oil @ 16°C / 60°F (In-house test): 7.335 lb/gallon
• Kinematic Viscosity @ 100°C / 212°F (ISO 3104 / ASTM D445): 4.8 mm²/s
• Kinematic Viscosity @ 40°C / 104°F (ISO 3104 / ASTM D445): 13.8 mm²/s
• Kinematic Viscosity @ -40°C / -40°F (ISO 3104 / ASTM D445): 650 mm²/s
• Kinematic Viscosity @ -54°C / -65°F (ISO 3104 / ASTM D445): 3388 mm²/s
• Viscosity Index (ISO 2909 / ASTM D2270): 326
• Flash Point - open cup method (ISO 2592 / ASTM D92): 110 °C / 230 °F
• Fire Point (ISO 2592 / ASTM D92): 118 °C / 245 °F
• Pour Point (ISO 3016 / ASTM D97): -65 °C / -85 °F
• Copper corrosion (72 hrs @ 121°C / 250°F) (ISO 2160 / ASTM D130): Rating 1a
• Four Ball Wear test - Wear Scar Diameter (40 kgf / 75°C / 1200 rpm / 1 hr) (ASTM D4172): 0.45 mm
• Falex Pin & Vee Block test - Extreme Pressure properties (ASTM D3233-03, method A): Pass